1980s and 1990s United States Cellular was founded as a subsidiary of Telephone and Data Systems Inc. (TDS) and incorporated on December 23, 1983. began operations in Knoxville, Tennessee (June), and Tulsa, Oklahoma (August). The company went public in 1988 where United States Cellular adopted USM as its ticker symbol on the American Stock Exchange. In 1999, United States Cellular relaunched under the “U.S. Cellular” brand name and image across all markets nationwide.
2000s The company purchased PrimeCo Wireless Communications in 2002 and launched in the Chicago area on November 22. It built on this growth by signing Chicagoan
Joan Cusack as national spokesperson. In January 2003, U.S. Cellular acquired naming rights to the baseball stadium used by the
Chicago White Sox. Formerly known as Comiskey Park, the stadium was officially renamed U.S. Cellular Field (it was renamed
Guaranteed Rate Field in 2016). That same year, U.S. Cellular and
Cingular (now owned by
AT&T Mobility) exchanged wireless assets and U.S. Cellular received new spectrum in markets of 13 states. In 2005, U.S. Cellular entered the
St. Louis market, making it the second largest market U.S. Cellular served, after Chicago. In October 2008, U.S. Cellular launched Mobile Broadband, a service enabling customers to access data on its cell phones 10 times faster than before. It brought
DSL-like service and capabilities to customers through
EVDO (Evolution-Data Optimized) technology, commonly referred to as 3G. As of
Q2 2008, U.S. Cellular was preparing to roll out
3G/
EVDO revision A to select markets.
2010s In May 2011, U.S. Cellular announced that it will offer
4G LTE. In a surprising move, U.S. Cellular announced the sale of several markets to
Sprint Corporation including its home market of Chicago. In June 2016,
Google announced that it partnered with U.S. Cellular as part of its
Google Fi service. U.S. Cellular contributed its network and LTE service to the "network of networks" along with
T-Mobile US and
Sprint Corporation.
2020s In March 2020, U.S. Cellular debuted launch of 5G in Wisconsin and Iowa U.S. Cellular rebranded as UScellular and upgraded its logo in the fall of that year. In February 2023,
Google Fi discontinued its partnership with UScellular in a statement saying "We will no longer be an official network partner of Google Fi," UScellular senior manager of media relations Katie Frey told CNET over email. "We value our relationship with Google, and we look forward to continuing our collaboration in other ways." In 2023, parent company TDS, announced that it was exploring strategic alternatives for UScellular. In January 2024, UScellular shut down its 2G/3G CDMA network with the spectrum being reallocated to its 4G LTE and 5G NR networks. On May 28, 2024,
T-Mobile US announced its intention to acquire most of UScellular's wireless operations, including all of the company’s customers and stores, and 30% of UScellular's
wireless spectrum in a transaction valued at 4.4 billion USD. While UScellular would retain 70% of its wireless spectrum and
cell sites under the deal, T-Mobile would also be able to lease more than 2,000 towers from the company. On July 11, 2025, the Federal Communications Commission approved the acquisition. The acquisition was completed on August 1, 2025. ==Network==